Heroic Mission / Wayfarer Questions (Destiny)

by ManKitten, The Stugotz is strong in me., Thursday, January 10, 2019, 08:23 (135 days ago)

I noticed that I could plausibly complete the Wayfarer triumph but I'm lacking some Heroic missions. Except, I don't know which missions I'm missing.

Is there a way to see which heroic missions I've completed?
Is there a way to cherry pick heroic missions or do I just have to wait until they show up in Ikoras vanguard list?
When I go to the flashpoint planet, the heroic missions are always greyed out and say "Already complete" or "Already Active" and I can't choose anything. Sup with that?